Question

_35%. 1:59 AM Introduction In chemistry laboratory, it is sometimes necessary to experimentally determine the concentration of an unknown acid or base solution. A procedure for making this kind of determination is called an acid-base titration. In this laboratory process, a solution of known concentration, called the standard solution, is carefully added to a solution of unknown concentration until the mixture becomes neutral. The neutral point of the solution is recognized by an indicator's color change. If the unknown solution is acidic, then the standard solution will be basic. The opposite would be true if the unknown solution was basic. We know that the mixing of equal amounts of acid and base lons will create neutral water. At the molecular level, this reaction can be illustrated with the following equation. H+ + OH- --> H2O (acid) (base) This equation states that one mole of hydrogen ions (acid) will neutralize one mole of hydroxide ions (base). Since we can exactly measure the moles of the standard solution, we can assume that the moles of the solution of unknown concentration will be the same at the neutral point. This is called the end-point of the titration. Using the equation Mava = MbVb, we can use the experimental data from the titration to find the unknown concentration.

please use the information provided above to answer the questions below (the 2 worksheet)

Answer 1